Malicious PDF — malware analysis report

Static analysis result for SHA-256 c07601b11ef06cf2…

MALICIOUS

PDF

44.3 KB Created: 2020-03-26 09:30:12 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: dd56ebae556dec111470389ff891943e SHA-1: 70be20b58fe14c77fa757d5b843661544863e973 SHA-256: c07601b11ef06cf2972178989bbb5ddd5a732a409dce96e92dc1eec4cbf79f04
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by an ML classifier as malicious and contains a large number of external links, many with numeric or generic slugs, indicative of a link farm. The document body, though partially corrupted, contains text related to 'Embarazo precoz en paraguay-estadisticas 2018' and embeds URLs pointing to various domains. These URLs likely serve as lures to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://theleawoodfamilydentist.com/uploads/1/3/0/4/130435516/130435516.html#embarazo+precoz+en+paraguay-estadisticas+2018
    • http://buttscratches.com/uploads/1/3/0/7/130776008/vubaforozoma.pdf
    • http://albanyems.com/uploads/1/3/0/7/130739500/gazafem.pdf
    • http://mommyandbee.com/uploads/1/3/0/6/130605433/noxavajugorudusojimo.pdf
    • http://mattressdiscountstore.net/uploads/1/3/0/2/130288642/jilufabopuzewigewi.pdf
    • http://pusalicious.com/uploads/1/3/0/5/130589088/75ffedc8c.pdf
    • http://foxandgator.com/uploads/1/3/0/6/130605212/3ae18eac11e0d.pdf
    • http://michaelchungrealtor.com/uploads/1/3/0/9/130969428/accb4c.pdf
    • http://newfeature.net/uploads/1/3/0/7/130739347/ravapopibagexiwi.pdf
    • http://acmehempcompany.com/uploads/1/3/0/3/130323324/jorowegerutuwew.pdf
    • http://scarf.peteandlauren.com/uploads/1/3/0/7/130775520/tukuzulitaduvusa.pdf
    • http://nivaacademy.com/uploads/1/3/0/2/130288915/nuxoserikulefok-dojodifubiwi.pdf
    • http://performanceinspired.com/uploads/1/3/1/1/131163691/318ab20d259a0f0.pdf
    • http://wavymoneymachine.com/uploads/1/3/0/6/130604031/kofijejepub-fijazofotudaf-bapojixepogot-junego.pdf
    • http://www.greekexpress.shop/uploads/1/3/0/5/130589198/ruxidunosokavifalij.pdf
    • http://www.misssalaises.com/uploads/1/3/0/3/130313613/5913534.pdf
    • http://mta-sts.curbappealseal.com/uploads/1/3/0/5/130589037/pexugem_junisotuxuf_tanipopon.pdf
    • http://crossfitdoublebay.com/uploads/1/3/0/6/130622005/koxefamirefoz.pdf
    • http://mrdatenschutz.com/uploads/1/3/0/6/130605292/6022865.pdf
    • http://kforkaveh.no/uploads/1/3/0/4/130476004/feliterasozizopes.pdf
    • http://giftofsight.vision/uploads/1/3/0/2/130274088/25faa6.pdf
    • http://lesjaktransfers.com/uploads/1/3/0/5/130590339/pubuxi.pdf
    • http://chaoticblingdesigns.com/uploads/1/3/0/5/130588452/wulozemaweruw.pdf
    • http://justsayidophotography.net/uploads/1/3/0/4/130436127/nukarugolavam-devosabowax.pdf
    • http://teamoutlook.com/uploads/1/3/0/2/130289595/d3424.pdf
    • http://www.the-whole-broadway-thing.com/uploads/1/3/0/6/130603835/muliwofubovo.pdf
    • http://justsayidophotography.net/uploads/1/3/0/4/130436127/n
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000081d3.bin
1685c4272f932f8b27685739e4501d3e6ecf502544e32068322af6ede6f36831		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D3 8644 bytes

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